Hummer H3R Off Road Concept Thanks primarily to the efforts of the Team HUMMER racing team, led by Rod Hall, the HUMMER H3 has quickly proved to be a formidable off-road competitor. It runs - and wins - in stock-class off-road races, where racers must rely on production chassis and powertrains. The H3R pays homage to the racing SUV while pushing the envelope on what could be considered “stock” - supposing the factory decided to drop in the 505-horsepower, 7.0L V-8 from the Corvette Z06. In addition to the high-powered engine, the H3R also sports a number of racing-inspired exterior modifications and an interior that blends racing functionality with boulevard comfort and convenience. No, a production H3 equipped with an LS7 engine isn’t in the cards, but for 2008, HUMMER offers the H3 Alpha, which is powered by a new, 300-hp 5.3L all-aluminum V-8. Vehicle highlights H3R concept LS7 7.0L V-8 with 505 horsepower and Hydra-Matic 4L60 electronically controlled four-speed transmission Custom valve covers and ignition coil covers New, forward-tilting hood with Lexan see-through insert Power-operated hood hinges Custom air induction system with dual air boxes Racing-inspired paint scheme with custom badging Off-road lighting package with unique light bar Custom rear dual exhaust system with four outlets Wheel flares with quick-remove fasteners HID headlamps from Starr Lighting Clear front corner lamp lenses Front bull bar Body-color “Jerry” can mounted on the spare tire carrier Twenty-inch wheels Mickey Thompson Bear Claw 35-inch off-road tires Rotora high-performance brake package Fixed quarter window inserts Eaton front locking differential Enhanced cooling system with larger radiator Modified suspension with Tenneco/Rancho four-inch lift package and Rancho reservoir shocks Re-trimmed interior with brushed metal accents and trim Front racing seats with five-point safety harnesses and weather-resistant seat material Simpson window safety net Washable rubber floor covering replaces carpeting Navigation radio system Off-road integrated display gauge package with compass, inclinometer, altimeter and timer Auxiliary performance gauges
Auxiliary 20-gallon fuel tank Second-row seats deleted Cargo-area spare tire mount GM Accessories (production and concept) Rocker protectors Underbody shield Side-window weather deflector Roadside assistance package First-aid kit Hitch receiver cover Body-color grille.